Yan Ma

ORCID: 0000-0003-1173-2920
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About
Contact & Profiles
Research Areas
  • Sleep and related disorders
  • Sleep and Wakefulness Research
  • Heart Rate Variability and Autonomic Control
  • EEG and Brain-Computer Interfaces
  • Obstructive Sleep Apnea Research
  • Acupuncture Treatment Research Studies
  • Second Language Learning and Teaching
  • Medical Research and Treatments
  • Traditional Chinese Medicine Studies
  • Neural dynamics and brain function
  • Complex Systems and Time Series Analysis
  • Non-Invasive Vital Sign Monitoring
  • EFL/ESL Teaching and Learning
  • Balance, Gait, and Falls Prevention
  • Circadian rhythm and melatonin
  • Advanced Sensor and Control Systems
  • Calibration and Measurement Techniques
  • Advanced Algorithms and Applications
  • Grey System Theory Applications
  • Traditional Chinese Medicine Analysis
  • Respiratory and Cough-Related Research
  • Cerebral Palsy and Movement Disorders
  • Advanced Measurement and Metrology Techniques
  • Neuroscience of respiration and sleep
  • Time Series Analysis and Forecasting

Chengdu Second People's Hospital
2010-2025

University of Manchester
2025

Children's Hospital of Capital Institute of Pediatrics
2025

Beth Israel Deaconess Medical Center
2014-2024

Harvard University
2015-2024

Chinese Academy of Medical Sciences & Peking Union Medical College
2010-2024

Brigham and Women's Hospital
2020-2024

Shanghai Jiao Tong University
2023-2024

XinHua Hospital
2023-2024

Tsinghua University
2024

Acupuncture has become popular and widely practiced in many countries around the world. Despite large amount of acupuncture-related literature that been published, broader trends prevalence scope acupuncture research remain underexplored. The current study quantitatively analyzes publications past 20 years.A bibliometric approach was used to search PubMed for all articles including clinical animal studies. Inclusion criteria were published between 1995 2014 with sufficient information...

10.1371/journal.pone.0168123 article EN cc-by PLoS ONE 2016-12-14

Purpose The accurate segmentation of liver and tumors from CT images can assist radiologists in decision‐making treatment planning. contours are currently obtained by manual labeling, which is time‐consuming subjective. Computer‐aided methods have been widely used the tumors. However, due to diversity shape, volume, image intensity, still a difficult task. In this study, we present Spatial Feature Fusion Convolutional Network (SFF‐Net) automatically segment images. Methods First, extract...

10.1002/mp.14585 article EN Medical Physics 2020-11-07

Background: Pressure ulcers (PUs) are chronic wounds that impose a significant burden not only on patients and their families but also healthcare systems worldwide. This study aims to evaluate the prevalence, trends, of PUs provide robust foundation for development targeted public policies at national, regional, global levels.

10.2139/ssrn.5087380 preprint EN 2025-01-01

Under the background of globalization, necessity and importance intercultural communication have become increasingly prominent. As one worlds major economies a populous country, Chinas cultivation talents with competence (ICC) deserves attention. This scholarly review examines pedagogical implications complexities faced by English language instructors in fostering ICC within Chinese tertiary education. Through comprehensive analysis both domestic international literature, this investigation...

10.54254/2753-7048/2024.20757 article EN cc-by Lecture Notes in Education Psychology and Public Media 2025-02-08

10.1016/j.psycr.2025.100253 article EN cc-by-nc-nd Psychiatry Research Case Reports 2025-02-01

Perinatal testicular torsion is not common in clinic. We report our experience treating such a condition 50-day boy with an intraperitoneal mass. The clinical manifestations, physical examination, imaging examination and treatment of the were retrospectively analyzed related literatures reviewed. Laparoscopic exploration, resection abdominal mass, high ligation left processus vaginalis orchiopexy performed after admission. According to results intraoperative frozen-section paraffin section...

10.3389/fped.2025.1501645 article EN cc-by Frontiers in Pediatrics 2025-02-26

Traditional Chinese medicine (TCM) is one of the oldest East Asian medical systems. The present study adopted a systems biology-based approach to provide new insights relating active constituents and molecular mechanisms underlying effects dragon's blood (DB) tablets for treatment colitis. This integrated chemical analysis, prediction absorption, distribution, metabolism, excretion (ADME), network pharmacology. Firstly, rapid, reliable, accurate ultra-performance liquid...

10.1371/journal.pone.0101432 article EN cc-by PLoS ONE 2014-07-28

Abstract Metabolic syndrome (MetS) has been associated with chronic damage to the cardiovascular system. This study aimed evaluate early stage cardiac autonomic dysfunction electrocardiography (ECG)-based measures in MetS subjects. During 2012–2013, 175 subjects and 226 healthy controls underwent ECG recordings of at least 4 hours starting morning ambulatory one-lead monitors. was diagnosed using criteria defined Adult Treatment Panel III, a modification waist circumference for Asians....

10.1038/srep44363 article EN cc-by Scientific Reports 2017-03-14

Although subjective-objective sleep discrepancy has long been observed in patients with insomnia, the profiles of this are poorly understood. Further, insomnia comorbidities remains underexplored. We sought to better characterize among patient groups and without comorbid conditions such as obstructive apnea (OSA).

10.5664/jcsm.9348 article EN Journal of Clinical Sleep Medicine 2021-05-17

In this paper, we propose a new automatic sleep stage classification method based on convolutional neural networks (CNN) using single-channel electroencephalogram (EEG). The stages usually consist of five stages: awake, rapid eye movement (REM), and three non-rapid (N1/N2/SWS). method, introduced two novel ways to convert EEG time series meaningful matrices which CNN can handle with: the dynamical time-frequency spectrum Hilbert-Huang transform temporal feature matrix, capturing...

10.1109/ictai.2017.00025 article EN 2017-11-01

Causal analysis based on non-uniform embedding schemes is an important way to detect the underlying interactions between dynamic systems. However, there are still some obstacles estimating high-dimensional conditional mutual information and forming optimal mixed vector in traditional schemes. In this study, we present a new method framed theory causality for multivariate time series, named LM-PMIME, which integrates low-dimensional approximation of search strategy construction vector. We...

10.3390/e21121233 article EN cc-by Entropy 2019-12-16

Subscription RequiredScientific InvestigationsDay–night patterns in heart rate variability and complexity: differences with age cardiopulmonary disease Yan Ma, MD, MPH, Mei-Chu Chang, PhD, Daniel Litrownik, BA, Peter M. Wayne, Gloria Y. Yeh, MPH Address correspondence to: Osher Center for Integrative Medicine, Division of Preventive Brigham Women's Hospital Harvard Medical School, 75 Francis St, Boston, MA 02115; Email: E-mail Address: [email protected] Massachusetts , PhD Interdisciplinary...

10.5664/jcsm.10434 article EN Journal of Clinical Sleep Medicine 2023-01-24

High prevalence of obstructive sleep apnea (OSA) has increased the demands for more convenient and accessible diagnostic devices other than standard in-lab polysomnography (PSG). Despite increasing utility photoplethysmograph (PPG), it remains understudied in underserved populations. This study aimed to evaluate reliability a pulse oximeter system with an automated analysis based on PPG signal diagnosis OSA, as compared PSG derived measures. Consecutive out-patients suspect OSA completed...

10.1097/md.0000000000006755 article EN cc-by-nc Medicine 2017-05-01

Background In October 2016, a senior high school student was diagnosed with sputum-smear positive [SS(+)] pulmonary tuberculosis (TB). We conducted an investigation of outbreak in the school, including among students and teachers latent TB, who we followed until July 2019. Methods defined TB infection (LTBI) as tuberculin skin test (TST) induration 15mm or larger; probable chest radiograph indicative plus productive cough/hemoptysis for at least 2 weeks, TST confirmed two more sputum smears...

10.1371/journal.pone.0247564 article EN cc-by PLoS ONE 2021-02-24
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